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Finding the Fourth Proportional to 848.40, 1,272.51 and 301.02

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Solution

The fourth proportional to 848.40, 1,272.51 and 301.02 is: 451.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.40 : 1,272.51 = 301.02 : x
  2. Step 2: Convert to fraction form
    848.40/1,272.51 = 301.02/x
  3. Step 3: Cross multiply
    848.40x = 1,272.51 × 301.02
  4. Step 4: Simplify right side
    848.40x = 383,050.96
  5. Step 5: Solve for x
    x = 383,050.96/848.40
  6. Step 6: Final answer
    x = 451.50

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Double scale
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1.5x scale

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.