Home / 1,055.30-1,582.92-561.87

Finding the Fourth Proportional to 1,055.30, 1,582.92 and 561.87

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Solution

The fourth proportional to 1,055.30, 1,582.92 and 561.87 is: 842.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.30 : 1,582.92 = 561.87 : x
  2. Step 2: Convert to fraction form
    1,055.30/1,582.92 = 561.87/x
  3. Step 3: Cross multiply
    1,055.30x = 1,582.92 × 561.87
  4. Step 4: Simplify right side
    1,055.30x = 889,395.26
  5. Step 5: Solve for x
    x = 889,395.26/1,055.30
  6. Step 6: Final answer
    x = 842.79

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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.