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Finding the Fourth Proportional to 913.01, 1,369.52 and 730.16

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Solution

The fourth proportional to 913.01, 1,369.52 and 730.16 is: 1,095.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.01 : 1,369.52 = 730.16 : x
  2. Step 2: Convert to fraction form
    913.01/1,369.52 = 730.16/x
  3. Step 3: Cross multiply
    913.01x = 1,369.52 × 730.16
  4. Step 4: Simplify right side
    913.01x = 999,968.72
  5. Step 5: Solve for x
    x = 999,968.72/913.01
  6. Step 6: Final answer
    x = 1,095.24

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Similar ratio
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1.5x scale

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.