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Finding the Fourth Proportional to 651.57, 898.24 and 402.75

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Solution

The fourth proportional to 651.57, 898.24 and 402.75 is: 555.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.57 : 898.24 = 402.75 : x
  2. Step 2: Convert to fraction form
    651.57/898.24 = 402.75/x
  3. Step 3: Cross multiply
    651.57x = 898.24 × 402.75
  4. Step 4: Simplify right side
    651.57x = 361,762.91
  5. Step 5: Solve for x
    x = 361,762.91/651.57
  6. Step 6: Final answer
    x = 555.22

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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.