Home / 1,287.09-1,931.51-466.02

Finding the Fourth Proportional to 1,287.09, 1,931.51 and 466.02

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Solution

The fourth proportional to 1,287.09, 1,931.51 and 466.02 is: 699.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287.09 : 1,931.51 = 466.02 : x
  2. Step 2: Convert to fraction form
    1,287.09/1,931.51 = 466.02/x
  3. Step 3: Cross multiply
    1,287.09x = 1,931.51 × 466.02
  4. Step 4: Simplify right side
    1,287.09x = 900,123.46
  5. Step 5: Solve for x
    x = 900,123.46/1,287.09
  6. Step 6: Final answer
    x = 699.35

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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.