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Finding the Fourth Proportional to 522.65, 783.41 and 340.18

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Solution

The fourth proportional to 522.65, 783.41 and 340.18 is: 509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.65 : 783.41 = 340.18 : x
  2. Step 2: Convert to fraction form
    522.65/783.41 = 340.18/x
  3. Step 3: Cross multiply
    522.65x = 783.41 × 340.18
  4. Step 4: Simplify right side
    522.65x = 266,500.41
  5. Step 5: Solve for x
    x = 266,500.41/522.65
  6. Step 6: Final answer
    x = 509.90

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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.