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Finding the Fourth Proportional to 1,583.12, 2,374.10 and 658.50

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Solution

The fourth proportional to 1,583.12, 2,374.10 and 658.50 is: 987.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583.12 : 2,374.10 = 658.50 : x
  2. Step 2: Convert to fraction form
    1,583.12/2,374.10 = 658.50/x
  3. Step 3: Cross multiply
    1,583.12x = 2,374.10 × 658.50
  4. Step 4: Simplify right side
    1,583.12x = 1,563,344.85
  5. Step 5: Solve for x
    x = 1,563,344.85/1,583.12
  6. Step 6: Final answer
    x = 987.51

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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.