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Finding the Fourth Proportional to 556.47, 834.03 and 434.55

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Solution

The fourth proportional to 556.47, 834.03 and 434.55 is: 651.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.47 : 834.03 = 434.55 : x
  2. Step 2: Convert to fraction form
    556.47/834.03 = 434.55/x
  3. Step 3: Cross multiply
    556.47x = 834.03 × 434.55
  4. Step 4: Simplify right side
    556.47x = 362,427.74
  5. Step 5: Solve for x
    x = 362,427.74/556.47
  6. Step 6: Final answer
    x = 651.30

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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.