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Finding the Fourth Proportional to 1,509.85, 2,264.50 and 414.30

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Solution

The fourth proportional to 1,509.85, 2,264.50 and 414.30 is: 621.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.85 : 2,264.50 = 414.30 : x
  2. Step 2: Convert to fraction form
    1,509.85/2,264.50 = 414.30/x
  3. Step 3: Cross multiply
    1,509.85x = 2,264.50 × 414.30
  4. Step 4: Simplify right side
    1,509.85x = 938,182.35
  5. Step 5: Solve for x
    x = 938,182.35/1,509.85
  6. Step 6: Final answer
    x = 621.37

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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.