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Finding the Fourth Proportional to 958.49, 1,434.96 and 495.17

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Solution

The fourth proportional to 958.49, 1,434.96 and 495.17 is: 741.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.49 : 1,434.96 = 495.17 : x
  2. Step 2: Convert to fraction form
    958.49/1,434.96 = 495.17/x
  3. Step 3: Cross multiply
    958.49x = 1,434.96 × 495.17
  4. Step 4: Simplify right side
    958.49x = 710,541.97
  5. Step 5: Solve for x
    x = 710,541.97/958.49
  6. Step 6: Final answer
    x = 741.32

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.