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Finding the Fourth Proportional to 531.38, 733.12 and 298.51

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Solution

The fourth proportional to 531.38, 733.12 and 298.51 is: 411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.38 : 733.12 = 298.51 : x
  2. Step 2: Convert to fraction form
    531.38/733.12 = 298.51/x
  3. Step 3: Cross multiply
    531.38x = 733.12 × 298.51
  4. Step 4: Simplify right side
    531.38x = 218,841.07
  5. Step 5: Solve for x
    x = 218,841.07/531.38
  6. Step 6: Final answer
    x = 411.83

Related Problems

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Half scale
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Double scale
Find fourth proportional to 532.38, 734.50 and 299.51
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.