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Finding the Fourth Proportional to 522.46, 783.71 and 430.99

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Solution

The fourth proportional to 522.46, 783.71 and 430.99 is: 646.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.46 : 783.71 = 430.99 : x
  2. Step 2: Convert to fraction form
    522.46/783.71 = 430.99/x
  3. Step 3: Cross multiply
    522.46x = 783.71 × 430.99
  4. Step 4: Simplify right side
    522.46x = 337,767.25
  5. Step 5: Solve for x
    x = 337,767.25/522.46
  6. Step 6: Final answer
    x = 646.50

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1.5x scale

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.