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Finding the Fourth Proportional to 1,395.17, 2,090.96 and 572.46

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Solution

The fourth proportional to 1,395.17, 2,090.96 and 572.46 is: 857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.17 : 2,090.96 = 572.46 : x
  2. Step 2: Convert to fraction form
    1,395.17/2,090.96 = 572.46/x
  3. Step 3: Cross multiply
    1,395.17x = 2,090.96 × 572.46
  4. Step 4: Simplify right side
    1,395.17x = 1,196,990.96
  5. Step 5: Solve for x
    x = 1,196,990.96/1,395.17
  6. Step 6: Final answer
    x = 857.95

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.