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Finding the Fourth Proportional to 474.68, 711.41 and 435.80

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Solution

The fourth proportional to 474.68, 711.41 and 435.80 is: 653.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.68 : 711.41 = 435.80 : x
  2. Step 2: Convert to fraction form
    474.68/711.41 = 435.80/x
  3. Step 3: Cross multiply
    474.68x = 711.41 × 435.80
  4. Step 4: Simplify right side
    474.68x = 310,026.74
  5. Step 5: Solve for x
    x = 310,026.74/474.68
  6. Step 6: Final answer
    x = 653.13

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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.