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Finding the Fourth Proportional to 354.86, 530.64 and 262.66

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Solution

The fourth proportional to 354.86, 530.64 and 262.66 is: 392.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.86 : 530.64 = 262.66 : x
  2. Step 2: Convert to fraction form
    354.86/530.64 = 262.66/x
  3. Step 3: Cross multiply
    354.86x = 530.64 × 262.66
  4. Step 4: Simplify right side
    354.86x = 139,377.90
  5. Step 5: Solve for x
    x = 139,377.90/354.86
  6. Step 6: Final answer
    x = 392.77

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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.