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Finding the Fourth Proportional to 1,304.99, 1,800.88 and 715.53

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Solution

The fourth proportional to 1,304.99, 1,800.88 and 715.53 is: 987.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,304.99 : 1,800.88 = 715.53 : x
  2. Step 2: Convert to fraction form
    1,304.99/1,800.88 = 715.53/x
  3. Step 3: Cross multiply
    1,304.99x = 1,800.88 × 715.53
  4. Step 4: Simplify right side
    1,304.99x = 1,288,583.67
  5. Step 5: Solve for x
    x = 1,288,583.67/1,304.99
  6. Step 6: Final answer
    x = 987.43

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1.5x scale

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.