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Finding the Fourth Proportional to 733.90, 1,013.80 and 512.76

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Solution

The fourth proportional to 733.90, 1,013.80 and 512.76 is: 708.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.90 : 1,013.80 = 512.76 : x
  2. Step 2: Convert to fraction form
    733.90/1,013.80 = 512.76/x
  3. Step 3: Cross multiply
    733.90x = 1,013.80 × 512.76
  4. Step 4: Simplify right side
    733.90x = 519,836.09
  5. Step 5: Solve for x
    x = 519,836.09/733.90
  6. Step 6: Final answer
    x = 708.32

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Double scale
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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.