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Finding the Fourth Proportional to 910.51, 1,364.81 and 499.52

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Solution

The fourth proportional to 910.51, 1,364.81 and 499.52 is: 748.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.51 : 1,364.81 = 499.52 : x
  2. Step 2: Convert to fraction form
    910.51/1,364.81 = 499.52/x
  3. Step 3: Cross multiply
    910.51x = 1,364.81 × 499.52
  4. Step 4: Simplify right side
    910.51x = 681,750.81
  5. Step 5: Solve for x
    x = 681,750.81/910.51
  6. Step 6: Final answer
    x = 748.76

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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.