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Finding the Fourth Proportional to 1,095.93, 1,642.68 and 608.72

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Solution

The fourth proportional to 1,095.93, 1,642.68 and 608.72 is: 912.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.93 : 1,642.68 = 608.72 : x
  2. Step 2: Convert to fraction form
    1,095.93/1,642.68 = 608.72/x
  3. Step 3: Cross multiply
    1,095.93x = 1,642.68 × 608.72
  4. Step 4: Simplify right side
    1,095.93x = 999,923.96
  5. Step 5: Solve for x
    x = 999,923.96/1,095.93
  6. Step 6: Final answer
    x = 912.40

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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.