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Finding the Fourth Proportional to 409.79, 565.64 and 262.62

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Solution

The fourth proportional to 409.79, 565.64 and 262.62 is: 362.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.79 : 565.64 = 262.62 : x
  2. Step 2: Convert to fraction form
    409.79/565.64 = 262.62/x
  3. Step 3: Cross multiply
    409.79x = 565.64 × 262.62
  4. Step 4: Simplify right side
    409.79x = 148,547.06
  5. Step 5: Solve for x
    x = 148,547.06/409.79
  6. Step 6: Final answer
    x = 362.50

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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.