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Finding the Fourth Proportional to 504.69, 756.45 and 340.20

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Solution

The fourth proportional to 504.69, 756.45 and 340.20 is: 509.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.69 : 756.45 = 340.20 : x
  2. Step 2: Convert to fraction form
    504.69/756.45 = 340.20/x
  3. Step 3: Cross multiply
    504.69x = 756.45 × 340.20
  4. Step 4: Simplify right side
    504.69x = 257,344.29
  5. Step 5: Solve for x
    x = 257,344.29/504.69
  6. Step 6: Final answer
    x = 509.91

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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.