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Finding the Fourth Proportional to 753.94, 1,129.59 and 632.02

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Solution

The fourth proportional to 753.94, 1,129.59 and 632.02 is: 946.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.94 : 1,129.59 = 632.02 : x
  2. Step 2: Convert to fraction form
    753.94/1,129.59 = 632.02/x
  3. Step 3: Cross multiply
    753.94x = 1,129.59 × 632.02
  4. Step 4: Simplify right side
    753.94x = 713,923.47
  5. Step 5: Solve for x
    x = 713,923.47/753.94
  6. Step 6: Final answer
    x = 946.92

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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.