Home / 1,070.13-1,476.71-621.96

Finding the Fourth Proportional to 1,070.13, 1,476.71 and 621.96

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Solution

The fourth proportional to 1,070.13, 1,476.71 and 621.96 is: 858.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.13 : 1,476.71 = 621.96 : x
  2. Step 2: Convert to fraction form
    1,070.13/1,476.71 = 621.96/x
  3. Step 3: Cross multiply
    1,070.13x = 1,476.71 × 621.96
  4. Step 4: Simplify right side
    1,070.13x = 918,454.55
  5. Step 5: Solve for x
    x = 918,454.55/1,070.13
  6. Step 6: Final answer
    x = 858.26

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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.