Home / 1,284.40-1,927.50-554.32

Finding the Fourth Proportional to 1,284.40, 1,927.50 and 554.32

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Solution

The fourth proportional to 1,284.40, 1,927.50 and 554.32 is: 831.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.40 : 1,927.50 = 554.32 : x
  2. Step 2: Convert to fraction form
    1,284.40/1,927.50 = 554.32/x
  3. Step 3: Cross multiply
    1,284.40x = 1,927.50 × 554.32
  4. Step 4: Simplify right side
    1,284.40x = 1,068,451.80
  5. Step 5: Solve for x
    x = 1,068,451.80/1,284.40
  6. Step 6: Final answer
    x = 831.87

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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.