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Finding the Fourth Proportional to 561.02, 774.21 and 365.06

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Solution

The fourth proportional to 561.02, 774.21 and 365.06 is: 503.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.02 : 774.21 = 365.06 : x
  2. Step 2: Convert to fraction form
    561.02/774.21 = 365.06/x
  3. Step 3: Cross multiply
    561.02x = 774.21 × 365.06
  4. Step 4: Simplify right side
    561.02x = 282,633.10
  5. Step 5: Solve for x
    x = 282,633.10/561.02
  6. Step 6: Final answer
    x = 503.78

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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.