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Finding the Fourth Proportional to 542.47, 748.58 and 303.18

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Solution

The fourth proportional to 542.47, 748.58 and 303.18 is: 418.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.47 : 748.58 = 303.18 : x
  2. Step 2: Convert to fraction form
    542.47/748.58 = 303.18/x
  3. Step 3: Cross multiply
    542.47x = 748.58 × 303.18
  4. Step 4: Simplify right side
    542.47x = 226,955.24
  5. Step 5: Solve for x
    x = 226,955.24/542.47
  6. Step 6: Final answer
    x = 418.38

Related Problems

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Double scale
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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.