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Finding the Fourth Proportional to 1,237.50, 1,857.15 and 468

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Solution

The fourth proportional to 1,237.50, 1,857.15 and 468 is: 702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237.50 : 1,857.15 = 468 : x
  2. Step 2: Convert to fraction form
    1,237.50/1,857.15 = 468/x
  3. Step 3: Cross multiply
    1,237.50x = 1,857.15 × 468
  4. Step 4: Simplify right side
    1,237.50x = 869,146.20
  5. Step 5: Solve for x
    x = 869,146.20/1,237.50
  6. Step 6: Final answer
    x = 702.34

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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.