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Finding the Fourth Proportional to 912.01, 1,366.34 and 501.64

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Solution

The fourth proportional to 912.01, 1,366.34 and 501.64 is: 751.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    912.01 : 1,366.34 = 501.64 : x
  2. Step 2: Convert to fraction form
    912.01/1,366.34 = 501.64/x
  3. Step 3: Cross multiply
    912.01x = 1,366.34 × 501.64
  4. Step 4: Simplify right side
    912.01x = 685,416.79
  5. Step 5: Solve for x
    x = 685,416.79/912.01
  6. Step 6: Final answer
    x = 751.55

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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.