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Finding the Fourth Proportional to 659.62, 910.05 and 383.62

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Solution

The fourth proportional to 659.62, 910.05 and 383.62 is: 529.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.62 : 910.05 = 383.62 : x
  2. Step 2: Convert to fraction form
    659.62/910.05 = 383.62/x
  3. Step 3: Cross multiply
    659.62x = 910.05 × 383.62
  4. Step 4: Simplify right side
    659.62x = 349,113.38
  5. Step 5: Solve for x
    x = 349,113.38/659.62
  6. Step 6: Final answer
    x = 529.26

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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.