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Finding the Fourth Proportional to 557.18, 835.74 and 340.30

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Solution

The fourth proportional to 557.18, 835.74 and 340.30 is: 510.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.18 : 835.74 = 340.30 : x
  2. Step 2: Convert to fraction form
    557.18/835.74 = 340.30/x
  3. Step 3: Cross multiply
    557.18x = 835.74 × 340.30
  4. Step 4: Simplify right side
    557.18x = 284,402.32
  5. Step 5: Solve for x
    x = 284,402.32/557.18
  6. Step 6: Final answer
    x = 510.43

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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.