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Finding the Fourth Proportional to 618.32, 926.60 and 435.34

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Solution

The fourth proportional to 618.32, 926.60 and 435.34 is: 652.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.32 : 926.60 = 435.34 : x
  2. Step 2: Convert to fraction form
    618.32/926.60 = 435.34/x
  3. Step 3: Cross multiply
    618.32x = 926.60 × 435.34
  4. Step 4: Simplify right side
    618.32x = 403,386.04
  5. Step 5: Solve for x
    x = 403,386.04/618.32
  6. Step 6: Final answer
    x = 652.39

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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.