Home / 1,323.16-1,985.15-543.22

Finding the Fourth Proportional to 1,323.16, 1,985.15 and 543.22

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Solution

The fourth proportional to 1,323.16, 1,985.15 and 543.22 is: 815.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.16 : 1,985.15 = 543.22 : x
  2. Step 2: Convert to fraction form
    1,323.16/1,985.15 = 543.22/x
  3. Step 3: Cross multiply
    1,323.16x = 1,985.15 × 543.22
  4. Step 4: Simplify right side
    1,323.16x = 1,078,376.79
  5. Step 5: Solve for x
    x = 1,078,376.79/1,323.16
  6. Step 6: Final answer
    x = 815.00

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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.