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Finding the Fourth Proportional to 591.77, 887.69 and 318.06

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Solution

The fourth proportional to 591.77, 887.69 and 318.06 is: 477.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.77 : 887.69 = 318.06 : x
  2. Step 2: Convert to fraction form
    591.77/887.69 = 318.06/x
  3. Step 3: Cross multiply
    591.77x = 887.69 × 318.06
  4. Step 4: Simplify right side
    591.77x = 282,339.48
  5. Step 5: Solve for x
    x = 282,339.48/591.77
  6. Step 6: Final answer
    x = 477.11

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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.