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Finding the Fourth Proportional to 557.56, 835.56 and 435.28

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Solution

The fourth proportional to 557.56, 835.56 and 435.28 is: 652.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.56 : 835.56 = 435.28 : x
  2. Step 2: Convert to fraction form
    557.56/835.56 = 435.28/x
  3. Step 3: Cross multiply
    557.56x = 835.56 × 435.28
  4. Step 4: Simplify right side
    557.56x = 363,702.56
  5. Step 5: Solve for x
    x = 363,702.56/557.56
  6. Step 6: Final answer
    x = 652.31

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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.