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Finding the Fourth Proportional to 955.38, 1,318.47 and 562.53

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Solution

The fourth proportional to 955.38, 1,318.47 and 562.53 is: 776.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.38 : 1,318.47 = 562.53 : x
  2. Step 2: Convert to fraction form
    955.38/1,318.47 = 562.53/x
  3. Step 3: Cross multiply
    955.38x = 1,318.47 × 562.53
  4. Step 4: Simplify right side
    955.38x = 741,670.93
  5. Step 5: Solve for x
    x = 741,670.93/955.38
  6. Step 6: Final answer
    x = 776.31

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1.5x scale

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.