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Finding the Fourth Proportional to 732.72, 1,011.12 and 453

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Solution

The fourth proportional to 732.72, 1,011.12 and 453 is: 625.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.72 : 1,011.12 = 453 : x
  2. Step 2: Convert to fraction form
    732.72/1,011.12 = 453/x
  3. Step 3: Cross multiply
    732.72x = 1,011.12 × 453
  4. Step 4: Simplify right side
    732.72x = 458,037.36
  5. Step 5: Solve for x
    x = 458,037.36/732.72
  6. Step 6: Final answer
    x = 625.12

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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.