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Finding the Fourth Proportional to 1,583.15, 2,372.95 and 658.07

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Solution

The fourth proportional to 1,583.15, 2,372.95 and 658.07 is: 986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583.15 : 2,372.95 = 658.07 : x
  2. Step 2: Convert to fraction form
    1,583.15/2,372.95 = 658.07/x
  3. Step 3: Cross multiply
    1,583.15x = 2,372.95 × 658.07
  4. Step 4: Simplify right side
    1,583.15x = 1,561,574.71
  5. Step 5: Solve for x
    x = 1,561,574.71/1,583.15
  6. Step 6: Final answer
    x = 986.38

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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.