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Finding the Fourth Proportional to 848.19, 1,266.51 and 748.53

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Solution

The fourth proportional to 848.19, 1,266.51 and 748.53 is: 1,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.19 : 1,266.51 = 748.53 : x
  2. Step 2: Convert to fraction form
    848.19/1,266.51 = 748.53/x
  3. Step 3: Cross multiply
    848.19x = 1,266.51 × 748.53
  4. Step 4: Simplify right side
    848.19x = 948,025.77
  5. Step 5: Solve for x
    x = 948,025.77/848.19
  6. Step 6: Final answer
    x = 1,117.70

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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.