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Finding the Fourth Proportional to 619.02, 848.55 and 617.79

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Solution

The fourth proportional to 619.02, 848.55 and 617.79 is: 846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.02 : 848.55 = 617.79 : x
  2. Step 2: Convert to fraction form
    619.02/848.55 = 617.79/x
  3. Step 3: Cross multiply
    619.02x = 848.55 × 617.79
  4. Step 4: Simplify right side
    619.02x = 524,225.70
  5. Step 5: Solve for x
    x = 524,225.70/619.02
  6. Step 6: Final answer
    x = 846.86

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.