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Finding the Fourth Proportional to 621.19, 856.36 and 444.10

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Solution

The fourth proportional to 621.19, 856.36 and 444.10 is: 612.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.19 : 856.36 = 444.10 : x
  2. Step 2: Convert to fraction form
    621.19/856.36 = 444.10/x
  3. Step 3: Cross multiply
    621.19x = 856.36 × 444.10
  4. Step 4: Simplify right side
    621.19x = 380,307.00
  5. Step 5: Solve for x
    x = 380,307.00/621.19
  6. Step 6: Final answer
    x = 612.23

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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.