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Finding the Fourth Proportional to 1,415.26, 1,953.08 and 848.68

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Solution

The fourth proportional to 1,415.26, 1,953.08 and 848.68 is: 1,171.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.26 : 1,953.08 = 848.68 : x
  2. Step 2: Convert to fraction form
    1,415.26/1,953.08 = 848.68/x
  3. Step 3: Cross multiply
    1,415.26x = 1,953.08 × 848.68
  4. Step 4: Simplify right side
    1,415.26x = 1,657,539.93
  5. Step 5: Solve for x
    x = 1,657,539.93/1,415.26
  6. Step 6: Final answer
    x = 1,171.19

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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.