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Finding the Fourth Proportional to 934.61, 1,288.72 and 602.59

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Solution

The fourth proportional to 934.61, 1,288.72 and 602.59 is: 830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.61 : 1,288.72 = 602.59 : x
  2. Step 2: Convert to fraction form
    934.61/1,288.72 = 602.59/x
  3. Step 3: Cross multiply
    934.61x = 1,288.72 × 602.59
  4. Step 4: Simplify right side
    934.61x = 776,569.78
  5. Step 5: Solve for x
    x = 776,569.78/934.61
  6. Step 6: Final answer
    x = 830.90

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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.