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Finding the Fourth Proportional to 625.06, 937.20 and 278.30

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Solution

The fourth proportional to 625.06, 937.20 and 278.30 is: 417.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.06 : 937.20 = 278.30 : x
  2. Step 2: Convert to fraction form
    625.06/937.20 = 278.30/x
  3. Step 3: Cross multiply
    625.06x = 937.20 × 278.30
  4. Step 4: Simplify right side
    625.06x = 260,822.76
  5. Step 5: Solve for x
    x = 260,822.76/625.06
  6. Step 6: Final answer
    x = 417.28

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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.