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Finding the Fourth Proportional to 563.04, 776.88 and 356

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Solution

The fourth proportional to 563.04, 776.88 and 356 is: 491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.04 : 776.88 = 356 : x
  2. Step 2: Convert to fraction form
    563.04/776.88 = 356/x
  3. Step 3: Cross multiply
    563.04x = 776.88 × 356
  4. Step 4: Simplify right side
    563.04x = 276,569.28
  5. Step 5: Solve for x
    x = 276,569.28/563.04
  6. Step 6: Final answer
    x = 491.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.