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Finding the Fourth Proportional to 530.28, 731.52 and 374.76

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Solution

The fourth proportional to 530.28, 731.52 and 374.76 is: 516.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.28 : 731.52 = 374.76 : x
  2. Step 2: Convert to fraction form
    530.28/731.52 = 374.76/x
  3. Step 3: Cross multiply
    530.28x = 731.52 × 374.76
  4. Step 4: Simplify right side
    530.28x = 274,144.44
  5. Step 5: Solve for x
    x = 274,144.44/530.28
  6. Step 6: Final answer
    x = 516.98

Related Problems

Find fourth proportional to 265.14, 365.76 and 187.38
Half scale
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Double scale
Find fourth proportional to 531.28, 732.90 and 375.76
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.