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Finding the Fourth Proportional to 557.69, 835.46 and 402.87

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Solution

The fourth proportional to 557.69, 835.46 and 402.87 is: 603.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.69 : 835.46 = 402.87 : x
  2. Step 2: Convert to fraction form
    557.69/835.46 = 402.87/x
  3. Step 3: Cross multiply
    557.69x = 835.46 × 402.87
  4. Step 4: Simplify right side
    557.69x = 336,586.67
  5. Step 5: Solve for x
    x = 336,586.67/557.69
  6. Step 6: Final answer
    x = 603.54

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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.