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Finding the Fourth Proportional to 445.51, 614.81 and 270.75

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Solution

The fourth proportional to 445.51, 614.81 and 270.75 is: 373.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.51 : 614.81 = 270.75 : x
  2. Step 2: Convert to fraction form
    445.51/614.81 = 270.75/x
  3. Step 3: Cross multiply
    445.51x = 614.81 × 270.75
  4. Step 4: Simplify right side
    445.51x = 166,459.81
  5. Step 5: Solve for x
    x = 166,459.81/445.51
  6. Step 6: Final answer
    x = 373.64

Related Problems

Find fourth proportional to 222.76, 307.41 and 135.38
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Double scale
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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.