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Finding the Fourth Proportional to 542.55, 748.71 and 332.76

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Solution

The fourth proportional to 542.55, 748.71 and 332.76 is: 459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.55 : 748.71 = 332.76 : x
  2. Step 2: Convert to fraction form
    542.55/748.71 = 332.76/x
  3. Step 3: Cross multiply
    542.55x = 748.71 × 332.76
  4. Step 4: Simplify right side
    542.55x = 249,140.74
  5. Step 5: Solve for x
    x = 249,140.74/542.55
  6. Step 6: Final answer
    x = 459.20

Related Problems

Find fourth proportional to 271.28, 374.36 and 166.38
Half scale
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Double scale
Find fourth proportional to 543.55, 750.09 and 333.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.