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Finding the Fourth Proportional to 555.64, 832.53 and 392.98

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Solution

The fourth proportional to 555.64, 832.53 and 392.98 is: 588.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.64 : 832.53 = 392.98 : x
  2. Step 2: Convert to fraction form
    555.64/832.53 = 392.98/x
  3. Step 3: Cross multiply
    555.64x = 832.53 × 392.98
  4. Step 4: Simplify right side
    555.64x = 327,167.64
  5. Step 5: Solve for x
    x = 327,167.64/555.64
  6. Step 6: Final answer
    x = 588.81

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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.