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Finding the Fourth Proportional to 953.72, 1,315.76 and 560.60

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Solution

The fourth proportional to 953.72, 1,315.76 and 560.60 is: 773.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.72 : 1,315.76 = 560.60 : x
  2. Step 2: Convert to fraction form
    953.72/1,315.76 = 560.60/x
  3. Step 3: Cross multiply
    953.72x = 1,315.76 × 560.60
  4. Step 4: Simplify right side
    953.72x = 737,615.06
  5. Step 5: Solve for x
    x = 737,615.06/953.72
  6. Step 6: Final answer
    x = 773.41

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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.