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Finding the Fourth Proportional to 1,000.76, 1,501.14 and 342.50

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Solution

The fourth proportional to 1,000.76, 1,501.14 and 342.50 is: 513.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,000.76 : 1,501.14 = 342.50 : x
  2. Step 2: Convert to fraction form
    1,000.76/1,501.14 = 342.50/x
  3. Step 3: Cross multiply
    1,000.76x = 1,501.14 × 342.50
  4. Step 4: Simplify right side
    1,000.76x = 514,140.45
  5. Step 5: Solve for x
    x = 514,140.45/1,000.76
  6. Step 6: Final answer
    x = 513.75

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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.