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Finding the Fourth Proportional to 624.34, 936.23 and 331.77

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Solution

The fourth proportional to 624.34, 936.23 and 331.77 is: 497.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.34 : 936.23 = 331.77 : x
  2. Step 2: Convert to fraction form
    624.34/936.23 = 331.77/x
  3. Step 3: Cross multiply
    624.34x = 936.23 × 331.77
  4. Step 4: Simplify right side
    624.34x = 310,608.81
  5. Step 5: Solve for x
    x = 310,608.81/624.34
  6. Step 6: Final answer
    x = 497.50

Related Problems

Find fourth proportional to 312.17, 468.12 and 165.88
Half scale
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Double scale
Find fourth proportional to 625.34, 937.73 and 332.77
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.