Home / 1,004.02-1,385.49-631.06

Finding the Fourth Proportional to 1,004.02, 1,385.49 and 631.06

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Solution

The fourth proportional to 1,004.02, 1,385.49 and 631.06 is: 870.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004.02 : 1,385.49 = 631.06 : x
  2. Step 2: Convert to fraction form
    1,004.02/1,385.49 = 631.06/x
  3. Step 3: Cross multiply
    1,004.02x = 1,385.49 × 631.06
  4. Step 4: Simplify right side
    1,004.02x = 874,327.32
  5. Step 5: Solve for x
    x = 874,327.32/1,004.02
  6. Step 6: Final answer
    x = 870.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.