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Finding the Fourth Proportional to 1,097.50, 1,643.58 and 577.93

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Solution

The fourth proportional to 1,097.50, 1,643.58 and 577.93 is: 865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097.50 : 1,643.58 = 577.93 : x
  2. Step 2: Convert to fraction form
    1,097.50/1,643.58 = 577.93/x
  3. Step 3: Cross multiply
    1,097.50x = 1,643.58 × 577.93
  4. Step 4: Simplify right side
    1,097.50x = 949,874.19
  5. Step 5: Solve for x
    x = 949,874.19/1,097.50
  6. Step 6: Final answer
    x = 865.49

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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.