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Finding the Fourth Proportional to 848.64, 1,271.58 and 482.31

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Solution

The fourth proportional to 848.64, 1,271.58 and 482.31 is: 722.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.64 : 1,271.58 = 482.31 : x
  2. Step 2: Convert to fraction form
    848.64/1,271.58 = 482.31/x
  3. Step 3: Cross multiply
    848.64x = 1,271.58 × 482.31
  4. Step 4: Simplify right side
    848.64x = 613,295.75
  5. Step 5: Solve for x
    x = 613,295.75/848.64
  6. Step 6: Final answer
    x = 722.68

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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.