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Finding the Fourth Proportional to 580.52, 870.24 and 215.24

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Solution

The fourth proportional to 580.52, 870.24 and 215.24 is: 322.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.52 : 870.24 = 215.24 : x
  2. Step 2: Convert to fraction form
    580.52/870.24 = 215.24/x
  3. Step 3: Cross multiply
    580.52x = 870.24 × 215.24
  4. Step 4: Simplify right side
    580.52x = 187,310.46
  5. Step 5: Solve for x
    x = 187,310.46/580.52
  6. Step 6: Final answer
    x = 322.66

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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.