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Finding the Fourth Proportional to 651.51, 977.17 and 189.19

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Solution

The fourth proportional to 651.51, 977.17 and 189.19 is: 283.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.51 : 977.17 = 189.19 : x
  2. Step 2: Convert to fraction form
    651.51/977.17 = 189.19/x
  3. Step 3: Cross multiply
    651.51x = 977.17 × 189.19
  4. Step 4: Simplify right side
    651.51x = 184,870.79
  5. Step 5: Solve for x
    x = 184,870.79/651.51
  6. Step 6: Final answer
    x = 283.76

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.