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Finding the Fourth Proportional to 625.10, 937.75 and 312.76

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Solution

The fourth proportional to 625.10, 937.75 and 312.76 is: 469.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.10 : 937.75 = 312.76 : x
  2. Step 2: Convert to fraction form
    625.10/937.75 = 312.76/x
  3. Step 3: Cross multiply
    625.10x = 937.75 × 312.76
  4. Step 4: Simplify right side
    625.10x = 293,284.44
  5. Step 5: Solve for x
    x = 293,284.44/625.10
  6. Step 6: Final answer
    x = 469.18

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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.