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Finding the Fourth Proportional to 1,157.66, 1,736.08 and 718.23

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Solution

The fourth proportional to 1,157.66, 1,736.08 and 718.23 is: 1,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.66 : 1,736.08 = 718.23 : x
  2. Step 2: Convert to fraction form
    1,157.66/1,736.08 = 718.23/x
  3. Step 3: Cross multiply
    1,157.66x = 1,736.08 × 718.23
  4. Step 4: Simplify right side
    1,157.66x = 1,246,913.49
  5. Step 5: Solve for x
    x = 1,246,913.49/1,157.66
  6. Step 6: Final answer
    x = 1,077.10

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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.