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Finding the Fourth Proportional to 1,095.59, 1,636.16 and 974.63

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Solution

The fourth proportional to 1,095.59, 1,636.16 and 974.63 is: 1,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.59 : 1,636.16 = 974.63 : x
  2. Step 2: Convert to fraction form
    1,095.59/1,636.16 = 974.63/x
  3. Step 3: Cross multiply
    1,095.59x = 1,636.16 × 974.63
  4. Step 4: Simplify right side
    1,095.59x = 1,594,637.57
  5. Step 5: Solve for x
    x = 1,594,637.57/1,095.59
  6. Step 6: Final answer
    x = 1,455.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.