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Finding the Fourth Proportional to 848.88, 1,275.15 and 719.15

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Solution

The fourth proportional to 848.88, 1,275.15 and 719.15 is: 1,080.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.88 : 1,275.15 = 719.15 : x
  2. Step 2: Convert to fraction form
    848.88/1,275.15 = 719.15/x
  3. Step 3: Cross multiply
    848.88x = 1,275.15 × 719.15
  4. Step 4: Simplify right side
    848.88x = 917,017.75
  5. Step 5: Solve for x
    x = 917,017.75/848.88
  6. Step 6: Final answer
    x = 1,080.27

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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.