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Finding the Fourth Proportional to 1,114.84, 1,537.32 and 958

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Solution

The fourth proportional to 1,114.84, 1,537.32 and 958 is: 1,321.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114.84 : 1,537.32 = 958 : x
  2. Step 2: Convert to fraction form
    1,114.84/1,537.32 = 958/x
  3. Step 3: Cross multiply
    1,114.84x = 1,537.32 × 958
  4. Step 4: Simplify right side
    1,114.84x = 1,472,752.56
  5. Step 5: Solve for x
    x = 1,472,752.56/1,114.84
  6. Step 6: Final answer
    x = 1,321.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.