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Finding the Fourth Proportional to 618.24, 926.32 and 435.31

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Solution

The fourth proportional to 618.24, 926.32 and 435.31 is: 652.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.24 : 926.32 = 435.31 : x
  2. Step 2: Convert to fraction form
    618.24/926.32 = 435.31/x
  3. Step 3: Cross multiply
    618.24x = 926.32 × 435.31
  4. Step 4: Simplify right side
    618.24x = 403,236.36
  5. Step 5: Solve for x
    x = 403,236.36/618.24
  6. Step 6: Final answer
    x = 652.23

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1.5x scale

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.