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Finding the Fourth Proportional to 848.55, 1,190.40 and 848.55

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Solution

The fourth proportional to 848.55, 1,190.40 and 848.55 is: 1,190.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.55 : 1,190.40 = 848.55 : x
  2. Step 2: Convert to fraction form
    848.55/1,190.40 = 848.55/x
  3. Step 3: Cross multiply
    848.55x = 1,190.40 × 848.55
  4. Step 4: Simplify right side
    848.55x = 1,010,113.92
  5. Step 5: Solve for x
    x = 1,010,113.92/848.55
  6. Step 6: Final answer
    x = 1,190.40

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.