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Finding the Fourth Proportional to 567.55, 786.37 and 555.25

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Solution

The fourth proportional to 567.55, 786.37 and 555.25 is: 769.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.55 : 786.37 = 555.25 : x
  2. Step 2: Convert to fraction form
    567.55/786.37 = 555.25/x
  3. Step 3: Cross multiply
    567.55x = 786.37 × 555.25
  4. Step 4: Simplify right side
    567.55x = 436,630.67
  5. Step 5: Solve for x
    x = 436,630.67/567.55
  6. Step 6: Final answer
    x = 769.32

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.