Home / 1,285.60-1,927.08-554.56

Finding the Fourth Proportional to 1,285.60, 1,927.08 and 554.56

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Solution

The fourth proportional to 1,285.60, 1,927.08 and 554.56 is: 831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.60 : 1,927.08 = 554.56 : x
  2. Step 2: Convert to fraction form
    1,285.60/1,927.08 = 554.56/x
  3. Step 3: Cross multiply
    1,285.60x = 1,927.08 × 554.56
  4. Step 4: Simplify right side
    1,285.60x = 1,068,681.48
  5. Step 5: Solve for x
    x = 1,068,681.48/1,285.60
  6. Step 6: Final answer
    x = 831.27

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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.