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Finding the Fourth Proportional to 614.75, 848.48 and 405.26

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Solution

The fourth proportional to 614.75, 848.48 and 405.26 is: 559.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.75 : 848.48 = 405.26 : x
  2. Step 2: Convert to fraction form
    614.75/848.48 = 405.26/x
  3. Step 3: Cross multiply
    614.75x = 848.48 × 405.26
  4. Step 4: Simplify right side
    614.75x = 343,855.00
  5. Step 5: Solve for x
    x = 343,855.00/614.75
  6. Step 6: Final answer
    x = 559.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.