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Finding the Fourth Proportional to 651, 898.20 and 402.08

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Solution

The fourth proportional to 651, 898.20 and 402.08 is: 554.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    651 : 898.20 = 402.08 : x
  2. Step 2: Convert to fraction form
    651/898.20 = 402.08/x
  3. Step 3: Cross multiply
    651x = 898.20 × 402.08
  4. Step 4: Simplify right side
    651x = 361,148.26
  5. Step 5: Solve for x
    x = 361,148.26/651
  6. Step 6: Final answer
    x = 554.76

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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.