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Finding the Fourth Proportional to 558.58, 841.17 and 487.30

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Solution

The fourth proportional to 558.58, 841.17 and 487.30 is: 733.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.58 : 841.17 = 487.30 : x
  2. Step 2: Convert to fraction form
    558.58/841.17 = 487.30/x
  3. Step 3: Cross multiply
    558.58x = 841.17 × 487.30
  4. Step 4: Simplify right side
    558.58x = 409,899.70
  5. Step 5: Solve for x
    x = 409,899.70/558.58
  6. Step 6: Final answer
    x = 733.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.