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Finding the Fourth Proportional to 625.55, 937.76 and 260.10

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Solution

The fourth proportional to 625.55, 937.76 and 260.10 is: 389.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.55 : 937.76 = 260.10 : x
  2. Step 2: Convert to fraction form
    625.55/937.76 = 260.10/x
  3. Step 3: Cross multiply
    625.55x = 937.76 × 260.10
  4. Step 4: Simplify right side
    625.55x = 243,911.38
  5. Step 5: Solve for x
    x = 243,911.38/625.55
  6. Step 6: Final answer
    x = 389.92

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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.