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Finding the Fourth Proportional to 953.17, 1,315.11 and 560.11

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Solution

The fourth proportional to 953.17, 1,315.11 and 560.11 is: 772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.17 : 1,315.11 = 560.11 : x
  2. Step 2: Convert to fraction form
    953.17/1,315.11 = 560.11/x
  3. Step 3: Cross multiply
    953.17x = 1,315.11 × 560.11
  4. Step 4: Simplify right side
    953.17x = 736,606.26
  5. Step 5: Solve for x
    x = 736,606.26/953.17
  6. Step 6: Final answer
    x = 772.80

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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.