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Finding the Fourth Proportional to 665.04, 921.36 and 652.08

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Solution

The fourth proportional to 665.04, 921.36 and 652.08 is: 903.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.04 : 921.36 = 652.08 : x
  2. Step 2: Convert to fraction form
    665.04/921.36 = 652.08/x
  3. Step 3: Cross multiply
    665.04x = 921.36 × 652.08
  4. Step 4: Simplify right side
    665.04x = 600,800.43
  5. Step 5: Solve for x
    x = 600,800.43/665.04
  6. Step 6: Final answer
    x = 903.40

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.