Home / 1,055.47-1,582.79-438.85

Finding the Fourth Proportional to 1,055.47, 1,582.79 and 438.85

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Solution

The fourth proportional to 1,055.47, 1,582.79 and 438.85 is: 658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.47 : 1,582.79 = 438.85 : x
  2. Step 2: Convert to fraction form
    1,055.47/1,582.79 = 438.85/x
  3. Step 3: Cross multiply
    1,055.47x = 1,582.79 × 438.85
  4. Step 4: Simplify right side
    1,055.47x = 694,605.20
  5. Step 5: Solve for x
    x = 694,605.20/1,055.47
  6. Step 6: Final answer
    x = 658.10

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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.