Home / 1,048.19-1,572.45-317.60

Finding the Fourth Proportional to 1,048.19, 1,572.45 and 317.60

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Solution

The fourth proportional to 1,048.19, 1,572.45 and 317.60 is: 476.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.19 : 1,572.45 = 317.60 : x
  2. Step 2: Convert to fraction form
    1,048.19/1,572.45 = 317.60/x
  3. Step 3: Cross multiply
    1,048.19x = 1,572.45 × 317.60
  4. Step 4: Simplify right side
    1,048.19x = 499,402.26
  5. Step 5: Solve for x
    x = 499,402.26/1,048.19
  6. Step 6: Final answer
    x = 476.44

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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.