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Finding the Fourth Proportional to 522.69, 784.04 and 339.99

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Solution

The fourth proportional to 522.69, 784.04 and 339.99 is: 509.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.69 : 784.04 = 339.99 : x
  2. Step 2: Convert to fraction form
    522.69/784.04 = 339.99/x
  3. Step 3: Cross multiply
    522.69x = 784.04 × 339.99
  4. Step 4: Simplify right side
    522.69x = 266,564.06
  5. Step 5: Solve for x
    x = 266,564.06/522.69
  6. Step 6: Final answer
    x = 509.99

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Double scale
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Similar ratio
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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.