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Finding the Fourth Proportional to 392.98, 589.47 and 176.51

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Solution

The fourth proportional to 392.98, 589.47 and 176.51 is: 264.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.98 : 589.47 = 176.51 : x
  2. Step 2: Convert to fraction form
    392.98/589.47 = 176.51/x
  3. Step 3: Cross multiply
    392.98x = 589.47 × 176.51
  4. Step 4: Simplify right side
    392.98x = 104,047.35
  5. Step 5: Solve for x
    x = 104,047.35/392.98
  6. Step 6: Final answer
    x = 264.77

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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.