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Finding the Fourth Proportional to 1,537.79, 2,306.95 and 715.64

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Solution

The fourth proportional to 1,537.79, 2,306.95 and 715.64 is: 1,073.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,537.79 : 2,306.95 = 715.64 : x
  2. Step 2: Convert to fraction form
    1,537.79/2,306.95 = 715.64/x
  3. Step 3: Cross multiply
    1,537.79x = 2,306.95 × 715.64
  4. Step 4: Simplify right side
    1,537.79x = 1,650,932.37
  5. Step 5: Solve for x
    x = 1,650,932.37/1,537.79
  6. Step 6: Final answer
    x = 1,073.58

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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.