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Finding the Fourth Proportional to 392.24, 585.36 and 383.00

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Solution

The fourth proportional to 392.24, 585.36 and 383.00 is: 571.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.24 : 585.36 = 383.00 : x
  2. Step 2: Convert to fraction form
    392.24/585.36 = 383.00/x
  3. Step 3: Cross multiply
    392.24x = 585.36 × 383.00
  4. Step 4: Simplify right side
    392.24x = 224,189.95
  5. Step 5: Solve for x
    x = 224,189.95/392.24
  6. Step 6: Final answer
    x = 571.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.