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Finding the Fourth Proportional to 904.72, 1,356.17 and 357.29

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Solution

The fourth proportional to 904.72, 1,356.17 and 357.29 is: 535.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.72 : 1,356.17 = 357.29 : x
  2. Step 2: Convert to fraction form
    904.72/1,356.17 = 357.29/x
  3. Step 3: Cross multiply
    904.72x = 1,356.17 × 357.29
  4. Step 4: Simplify right side
    904.72x = 484,545.98
  5. Step 5: Solve for x
    x = 484,545.98/904.72
  6. Step 6: Final answer
    x = 535.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.