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Finding the Fourth Proportional to 848.95, 1,171.06 and 612.63

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Solution

The fourth proportional to 848.95, 1,171.06 and 612.63 is: 845.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.95 : 1,171.06 = 612.63 : x
  2. Step 2: Convert to fraction form
    848.95/1,171.06 = 612.63/x
  3. Step 3: Cross multiply
    848.95x = 1,171.06 × 612.63
  4. Step 4: Simplify right side
    848.95x = 717,426.49
  5. Step 5: Solve for x
    x = 717,426.49/848.95
  6. Step 6: Final answer
    x = 845.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.