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Finding the Fourth Proportional to 848.95, 1,171.61 and 555.01

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Solution

The fourth proportional to 848.95, 1,171.61 and 555.01 is: 765.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.95 : 1,171.61 = 555.01 : x
  2. Step 2: Convert to fraction form
    848.95/1,171.61 = 555.01/x
  3. Step 3: Cross multiply
    848.95x = 1,171.61 × 555.01
  4. Step 4: Simplify right side
    848.95x = 650,255.27
  5. Step 5: Solve for x
    x = 650,255.27/848.95
  6. Step 6: Final answer
    x = 765.95

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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.