Home / 1,323.54-1,985.31-554.58

Finding the Fourth Proportional to 1,323.54, 1,985.31 and 554.58

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Solution

The fourth proportional to 1,323.54, 1,985.31 and 554.58 is: 831.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.54 : 1,985.31 = 554.58 : x
  2. Step 2: Convert to fraction form
    1,323.54/1,985.31 = 554.58/x
  3. Step 3: Cross multiply
    1,323.54x = 1,985.31 × 554.58
  4. Step 4: Simplify right side
    1,323.54x = 1,101,013.22
  5. Step 5: Solve for x
    x = 1,101,013.22/1,323.54
  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.