Home / 1,055.23-1,582.72-438.77

Finding the Fourth Proportional to 1,055.23, 1,582.72 and 438.77

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Solution

The fourth proportional to 1,055.23, 1,582.72 and 438.77 is: 658.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.23 : 1,582.72 = 438.77 : x
  2. Step 2: Convert to fraction form
    1,055.23/1,582.72 = 438.77/x
  3. Step 3: Cross multiply
    1,055.23x = 1,582.72 × 438.77
  4. Step 4: Simplify right side
    1,055.23x = 694,452.91
  5. Step 5: Solve for x
    x = 694,452.91/1,055.23
  6. Step 6: Final answer
    x = 658.11

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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.