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Finding the Fourth Proportional to 848.70, 1,273.05 and 557.10

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Solution

The fourth proportional to 848.70, 1,273.05 and 557.10 is: 835.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.70 : 1,273.05 = 557.10 : x
  2. Step 2: Convert to fraction form
    848.70/1,273.05 = 557.10/x
  3. Step 3: Cross multiply
    848.70x = 1,273.05 × 557.10
  4. Step 4: Simplify right side
    848.70x = 709,216.16
  5. Step 5: Solve for x
    x = 709,216.16/848.70
  6. Step 6: Final answer
    x = 835.65

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Double scale
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Similar ratio
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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.