Home / 1,292.61-1,938.60-368.18

Finding the Fourth Proportional to 1,292.61, 1,938.60 and 368.18

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Solution

The fourth proportional to 1,292.61, 1,938.60 and 368.18 is: 552.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.61 : 1,938.60 = 368.18 : x
  2. Step 2: Convert to fraction form
    1,292.61/1,938.60 = 368.18/x
  3. Step 3: Cross multiply
    1,292.61x = 1,938.60 × 368.18
  4. Step 4: Simplify right side
    1,292.61x = 713,744.06
  5. Step 5: Solve for x
    x = 713,744.06/1,292.61
  6. Step 6: Final answer
    x = 552.17

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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.