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Finding the Fourth Proportional to 758.56, 1,047.24 and 464

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Solution

The fourth proportional to 758.56, 1,047.24 and 464 is: 640.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.56 : 1,047.24 = 464 : x
  2. Step 2: Convert to fraction form
    758.56/1,047.24 = 464/x
  3. Step 3: Cross multiply
    758.56x = 1,047.24 × 464
  4. Step 4: Simplify right side
    758.56x = 485,919.36
  5. Step 5: Solve for x
    x = 485,919.36/758.56
  6. Step 6: Final answer
    x = 640.58

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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.