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Finding the Fourth Proportional to 508.18, 700.64 and 342.28

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Solution

The fourth proportional to 508.18, 700.64 and 342.28 is: 471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.18 : 700.64 = 342.28 : x
  2. Step 2: Convert to fraction form
    508.18/700.64 = 342.28/x
  3. Step 3: Cross multiply
    508.18x = 700.64 × 342.28
  4. Step 4: Simplify right side
    508.18x = 239,815.06
  5. Step 5: Solve for x
    x = 239,815.06/508.18
  6. Step 6: Final answer
    x = 471.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.