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Finding the Fourth Proportional to 588.51, 812.57 and 392.49

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Solution

The fourth proportional to 588.51, 812.57 and 392.49 is: 541.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.51 : 812.57 = 392.49 : x
  2. Step 2: Convert to fraction form
    588.51/812.57 = 392.49/x
  3. Step 3: Cross multiply
    588.51x = 812.57 × 392.49
  4. Step 4: Simplify right side
    588.51x = 318,923.64
  5. Step 5: Solve for x
    x = 318,923.64/588.51
  6. Step 6: Final answer
    x = 541.92

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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.