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Finding the Fourth Proportional to 474.35, 711.52 and 259.29

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Solution

The fourth proportional to 474.35, 711.52 and 259.29 is: 388.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.35 : 711.52 = 259.29 : x
  2. Step 2: Convert to fraction form
    474.35/711.52 = 259.29/x
  3. Step 3: Cross multiply
    474.35x = 711.52 × 259.29
  4. Step 4: Simplify right side
    474.35x = 184,490.02
  5. Step 5: Solve for x
    x = 184,490.02/474.35
  6. Step 6: Final answer
    x = 388.93

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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.