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Finding the Fourth Proportional to 749.36, 1,117 and 716.56

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Solution

The fourth proportional to 749.36, 1,117 and 716.56 is: 1,068.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.36 : 1,117 = 716.56 : x
  2. Step 2: Convert to fraction form
    749.36/1,117 = 716.56/x
  3. Step 3: Cross multiply
    749.36x = 1,117 × 716.56
  4. Step 4: Simplify right side
    749.36x = 800,397.52
  5. Step 5: Solve for x
    x = 800,397.52/749.36
  6. Step 6: Final answer
    x = 1,068.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.