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Finding the Fourth Proportional to 955.24, 1,317.88 and 562.20

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Solution

The fourth proportional to 955.24, 1,317.88 and 562.20 is: 775.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.24 : 1,317.88 = 562.20 : x
  2. Step 2: Convert to fraction form
    955.24/1,317.88 = 562.20/x
  3. Step 3: Cross multiply
    955.24x = 1,317.88 × 562.20
  4. Step 4: Simplify right side
    955.24x = 740,912.14
  5. Step 5: Solve for x
    x = 740,912.14/955.24
  6. Step 6: Final answer
    x = 775.63

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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.