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Finding the Fourth Proportional to 581.40, 870.95 and 349.60

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Solution

The fourth proportional to 581.40, 870.95 and 349.60 is: 523.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.40 : 870.95 = 349.60 : x
  2. Step 2: Convert to fraction form
    581.40/870.95 = 349.60/x
  3. Step 3: Cross multiply
    581.40x = 870.95 × 349.60
  4. Step 4: Simplify right side
    581.40x = 304,484.12
  5. Step 5: Solve for x
    x = 304,484.12/581.40
  6. Step 6: Final answer
    x = 523.71

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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.