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Finding the Fourth Proportional to 1,330.04, 1,995.88 and 508.40

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Solution

The fourth proportional to 1,330.04, 1,995.88 and 508.40 is: 762.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.04 : 1,995.88 = 508.40 : x
  2. Step 2: Convert to fraction form
    1,330.04/1,995.88 = 508.40/x
  3. Step 3: Cross multiply
    1,330.04x = 1,995.88 × 508.40
  4. Step 4: Simplify right side
    1,330.04x = 1,014,695.41
  5. Step 5: Solve for x
    x = 1,014,695.41/1,330.04
  6. Step 6: Final answer
    x = 762.91

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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.