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Finding the Fourth Proportional to 1,151.46, 1,588.42 and 753.36

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Solution

The fourth proportional to 1,151.46, 1,588.42 and 753.36 is: 1,039.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.46 : 1,588.42 = 753.36 : x
  2. Step 2: Convert to fraction form
    1,151.46/1,588.42 = 753.36/x
  3. Step 3: Cross multiply
    1,151.46x = 1,588.42 × 753.36
  4. Step 4: Simplify right side
    1,151.46x = 1,196,647.08
  5. Step 5: Solve for x
    x = 1,196,647.08/1,151.46
  6. Step 6: Final answer
    x = 1,039.24

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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.