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Finding the Fourth Proportional to 706.19, 974.09 and 485.26

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Solution

The fourth proportional to 706.19, 974.09 and 485.26 is: 669.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.19 : 974.09 = 485.26 : x
  2. Step 2: Convert to fraction form
    706.19/974.09 = 485.26/x
  3. Step 3: Cross multiply
    706.19x = 974.09 × 485.26
  4. Step 4: Simplify right side
    706.19x = 472,684.49
  5. Step 5: Solve for x
    x = 472,684.49/706.19
  6. Step 6: Final answer
    x = 669.34

Related Problems

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Half scale
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Double scale
Find fourth proportional to 707.19, 975.46 and 486.26
Similar ratio
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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.