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Finding the Fourth Proportional to 1,584.24, 2,376.60 and 558

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Solution

The fourth proportional to 1,584.24, 2,376.60 and 558 is: 837.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,584.24 : 2,376.60 = 558 : x
  2. Step 2: Convert to fraction form
    1,584.24/2,376.60 = 558/x
  3. Step 3: Cross multiply
    1,584.24x = 2,376.60 × 558
  4. Step 4: Simplify right side
    1,584.24x = 1,326,142.80
  5. Step 5: Solve for x
    x = 1,326,142.80/1,584.24
  6. Step 6: Final answer
    x = 837.08

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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.