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Finding the Fourth Proportional to 1,807.13, 2,710.80 and 508.50

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Solution

The fourth proportional to 1,807.13, 2,710.80 and 508.50 is: 762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.13 : 2,710.80 = 508.50 : x
  2. Step 2: Convert to fraction form
    1,807.13/2,710.80 = 508.50/x
  3. Step 3: Cross multiply
    1,807.13x = 2,710.80 × 508.50
  4. Step 4: Simplify right side
    1,807.13x = 1,378,441.80
  5. Step 5: Solve for x
    x = 1,378,441.80/1,807.13
  6. Step 6: Final answer
    x = 762.78

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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.