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Finding the Fourth Proportional to 732.02, 1,010.12 and 400.45

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Solution

The fourth proportional to 732.02, 1,010.12 and 400.45 is: 552.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.02 : 1,010.12 = 400.45 : x
  2. Step 2: Convert to fraction form
    732.02/1,010.12 = 400.45/x
  3. Step 3: Cross multiply
    732.02x = 1,010.12 × 400.45
  4. Step 4: Simplify right side
    732.02x = 404,497.50
  5. Step 5: Solve for x
    x = 404,497.50/732.02
  6. Step 6: Final answer
    x = 552.58

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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.