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Finding the Fourth Proportional to 848.69, 1,271.70 and 718.08

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Solution

The fourth proportional to 848.69, 1,271.70 and 718.08 is: 1,076.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.69 : 1,271.70 = 718.08 : x
  2. Step 2: Convert to fraction form
    848.69/1,271.70 = 718.08/x
  3. Step 3: Cross multiply
    848.69x = 1,271.70 × 718.08
  4. Step 4: Simplify right side
    848.69x = 913,182.34
  5. Step 5: Solve for x
    x = 913,182.34/848.69
  6. Step 6: Final answer
    x = 1,076.00

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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.