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Finding the Fourth Proportional to 562.95, 776.25 and 388.26

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Solution

The fourth proportional to 562.95, 776.25 and 388.26 is: 535.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.95 : 776.25 = 388.26 : x
  2. Step 2: Convert to fraction form
    562.95/776.25 = 388.26/x
  3. Step 3: Cross multiply
    562.95x = 776.25 × 388.26
  4. Step 4: Simplify right side
    562.95x = 301,386.83
  5. Step 5: Solve for x
    x = 301,386.83/562.95
  6. Step 6: Final answer
    x = 535.37

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Similar ratio
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1.5x scale

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.